I have received mail from a variety of rural USA locations, and many times the Postmaster is just one person, running the local shop. They get to know you, so i

I have received mail from a variety of rural USA locations, and many times the Postmaster is just one person, running the local shop. They get to know you, so informal or incomplete addresses may still work. But if it is non-standard, it will be delayed or returned or just thrown into storage.